Semicylindrical pot-type burner



July 5, 1949. B. HAYTER 2,475,024

SEMICYLINDRICAL POT TYPE BURNER Filed Aug. 18, 1944 3 Sheets-Sheet lJuly 5, 1949. B. HAYTER SEMICYLINDRICAL POT TYPE BURNER Filed Aug. 18,1944 i@ l' li-? 4f o o gx .36# L/s.' n i cr/o f 355 /5 4 /0 50 45 o fr??45N Q 47 au. LEVEL ?L- afce Jayer y PMM ,2Min

July 5, 1949. B. HAYTER SEMICYLINDRICAL POT TYPE BURNER 3 Sheets-Sheet 3Filed Aug. 18, 1944 OIL LEVEL named July s, 194eA SEMICYLINDRICALPOT-TYPEBURNER Bruce Hayter, Santa Fe, N. Mex., assignor, by mesneassignments, to Breese Burners, Inc., Santa Fe, N. Mex., a corporationofDelaware Application August 18, 1944, Serial No. 550,040

4 Claims.

My invention relates to an improvement in liquid fuel burners and hasfor one purpose to provide a burner for liquid fuels in whichahorizontally axised pot is employed.

Another purpose is to provide aburner in which the side of ahorizontally axised pot receives the fuel to be vaporized.

Another purpose is to provide improved means for gravitationallydelivering liquid fuel -to a pot type burner. e

Another purpose is to provide an improved means for vaporizing liquidfuel in a hydroxylating burner.

Another purpose is to provide an improved means for feeding a liquidfuel to a pot type burner without the employment of a oat chamber orother means for maintaining a specific liquid fuel level in the pot.

Other purposes will appear from time to time in the course of thespecification.

My invention is illustrated more or less diagrammatically in theaccompanying drawings, wherein:

Figure 1 is a vertical section;

Figure 2 is a section along the line 2-2 of Figure 1:

Figure 3 is a section along the line 3-3 of Figure 2;

Figure 4 is a vertical section through a variant form of the device; y

Figure 5 is a similar section through a further variation;

Figure 6 is a similar section through a further variation;

Figure 7 is a. section through a further variation; and

Figure 8 is a section onthe line 8-8 of Figure 7.

Like parts are indicated by like characters throughout the specificationand drawings.

Referring to the drawings, i generally indicates any suitable combustionchamber or space into which the flame from the burner is admitted ordirected. It is shown as including a vertical wall 2, having a ameadmitting aperture 3. It will be understood, however, that the inventionmay be applied to chambers in which the wall is not vertical and is notlimited to a horizontally axised pot.

In the illustrated embodiment of the invention,

I illustrate the pot as horizontally axised. I illustrate a pot having asemi-cylindrical side wall 4, and a bottom wall 5, the latter beingindicated as generally fiat and horizontal. The 'otherwise open end ofthe pot thus formed, is partially closed by a half ring B with anaperture 1 bounded by an arcuate edge 8. 'I'he wall 4 and the inner edge8 of the ring 6 may be described about the center 9 although it will beunderstood that substantial variation in the shape of the pot may bemade.

The pot wall 4 may be provided with an outwardly extending flange I0.The half ring 6 is continued outwardly as at II to form, in effect, aplate which is spaced from thevfront wall 2 of the combustion chamber byan upper abutment Astrip I2 and a lower abutment strip I3, having anoutwardly extending flange I4, extending beneath the bottom 5 of the potand side strips I3-a. 'I'he ange I3 serves to provide a bottom portionin which oil can accumulate to a substantial volume without flowinggravitationally out of the pot. The structure may be supported forexample by a pair of tension members I5 with hooks I6 extending intoapertures I1 in the wall 2, providing a readily removable support forthe pot; Any other suitable means may be employed for securing the potstructure in relation to the wall 2. The semi-cylindrical member 4 isprovided with a plurality of primary air inlets I8 herein shown asarranged in rows located at various distances from the ends of the pot.

I9 indicates a single row of secondary air inlet apertures, the axes ofwhich are preferably tilted to direct the air forwardly as well asinwardly, in relation to the combustion chamber. 2l) is a liquid fuelcontainer herein shown as having a removable cover 2|. 22 is a fuel pipeextending from the downwardly conic bottom 23 of the tank. 24 generallyindicates any suitable valve structure, the details of which do not ofthemselves form part of the present invention. It will be understood,however, that in response to actuation of the manual control member 25,the rate of flow of the liquid fuel through the valve assembly may bevaried.

I may find it advantageous to divide the interior of the burner into twoparts by a generally vertical pilot half ring 35 having an aperture 36.It will be understood that when a relatively small rate of fuel flow tothe burner is maintained, the pilot member 35 forms, in effect, the ameringk of a smaller burner.

26 is a pipe elbow provided with a nozzle element 21 aligned within aunion 28 apertured atone side as at 29, to permit visual observation ofthe rate of flow of the liquid fuel from the nozzle with the axis of thenozzle 21. Liquid fuel is permitted to ow downwardly therethrough and 30is a vertical pipe section vertically aligned ing bottom plate 6 inFigure 1 is substantially horizontal. 'I'hus the ilow of the liquid fueltowards the forward end of the burner is somewhat hastened by gravity. Ialso illustrate the fuel as admitted at a level adjacent the bottom ofthe burner, or at the upper edge of the vaporizing plate a. I illustratefor example an inlet duct 40 controlled by any suitable valve controlmechanism 4l.

In the form of Figure 5 I illustrate, as specific means for controllingthe ow of liquid fuel to the burner, a oat valve assembly generallyindicated as 45 and having an exterior control knob 46. Any suitablemeans may be employed for maintaining a, predetermined level of liquidfuel in the iioat assembly, as externally indicated by the level 41.This level is set below the upper edge of the flange I3. Thus it isimpossible for suflicient oil to accumulate in the burner bottomy toflow over into the heater.

In Figure 5 I illustrate the liquid fuel as delivered to the upper edgeof the vaporizing plate 5b by any suitable inlet duct or tube 48 allparts of which are below the maximum oil level 41. However, it also willbe understood that I may employ a float valve assembly in which, ifdesired, a second liquid passage 49 may deliver liquid fuel to theforward or lower end of the vaporizing plate 5b. I may simultaneouslydeliver liquid fuel along both ducts, where the operator elects toconnect both ducts, and I may employ an additional control member 56 forcontrolling the rate of flow of fuel along the duct 49.

Referring to the form of Figure 6, instead of employing a pilot memberintermediate the ends of the pot I provide a main pot generallyindicated at 60 with an end 6l apertured as at 62. The vaporizing bottom63 is shown as sloping slightly toward the heater wall 2 and asterminating in a flange 64, corresponding to the flange I3 of Figure 1.65 is the equivalent of the flame half ring of Figure l. 66 is a pilothalf pot of .smaller diameter and. in effect, simply a smaller burner ofthe same type as the main pot 60. It may for example have primary airinlets 61 and secondary air inlets 68. The vaporizing plate 63 may, ifdesired, be continuous from end to end of the burner. is any suitablemeans, such as a float valve structure, with its control knob 1I,effective to control the rate of flow of liquid fuel along the duct 12to the upper, outer edge of the vaporizing plate 63. When a relativelylow rate of fuel flow is maintained the half pot 66 serves as a completeburner with its primary and secondary air supply adequate to vaporizeand burn the liquid fuel delivered along the duct 12 to the vaporizingplate 63. As soon as more liquid fuel is delivered than can be vaporizedin the member 66, the excess liquid flows into the interior of the mainpot 60 and the main pot 60 begins to function. At the maximum rate ofliquid fuel flow, fuel combustion takes place at or beyond the secondaryinlets I9a of Figure 6 and flame will flow into the interior of theheater.

With reference to the form of Figure 7 the burner structure is identicalwith that shown in Figure 6 and the elements are similarly identified,

with the exception of the addition ofv a transverse i'lange or dam 'ilin the general plane of the end 6l of the main pot 60. In the form ofFigure 7, I employ a float valve unit 16 having two 5 control knobs 11,18 and two liquid fuel delivery ducts 16, 60 controlled thereby. Theduct 18 delivers liquid fuel to the interior of the main pot 60. Theduct I0 delivers liquid fuel to the interior of the supplemental orpilot pot 66. Any

10 suitable means, manual or automatic, may be employed for controllingthe flow of liquid fuel to the pots, in such fashion that, when theburner is operating under pilot conditions the liquid fuel is deliveredonly to the small or pilot burner 66.

15 Sufllcient combustion is maintained to keep the vaporizing plate orbottom 63 sufficiently hot so that as soon as the liquid fuel isadmitted along the duct 16 vaporization and combustion begins in the pot60.

20 It will be realized that Whereas I have shown and described anoperative device, still many changes may be made in the size, shape,number, arrangement and disposition of parts without departing from thespirit of my invention and I wish, therefore, that my showing be takenas in a large sense diagrammatic.

The use and operation of my invention are as follows:

I illustrate a burner of the hydroxylating type,

in which a burner pot or half pot is employed in connection with avaporizing surface or plate. The liquid fuel is delivered to thevaporizing surface 5, 6a, 6b, or 63 and is vaporized thereon by the heatof combustion taking place in or near the pot. It may be advantageous totilt the vaporizing plate, as shown in Figures 4 and following, so thatthe liquid fuel will tend to now toward the secondary zone of the pot,and thus toward the hottest end of the burner. Primary air is deliveredat the zone of admission of the liquid fuel and is effective to producea primary mixture of air and vaporized fuel. As this primary mixturemoves toward the heater, it receives the secondary air supply, throughthe apertures I9 or I9a and is completed and burned.

To permit efficient combustion at low fire, or at the pilot stage, witha minimum of carbon deposit, I employ the pilot element 35 or 35h inFigures 1 to 5, and the separate pilot burner 66 in Figures 6 and 7. InFigures 1 to 5 the pilot element divides the interior of the pot into apilot chamber and a main mixing and combustion chamber. At a low rate ofliquid fuel ow, all of the liquid fuel is vaporized in the pilot space.

As the rate of liquid fuel flow increases, combustion extends into themain mixing and combustion space.

In Figures 6 and 7, I illustrate a separate pilot chamber or burnerwhich is of smaller diameter than the main burner 60 and which isconnected to it through the aperture 62. In effect, part of the bottomor end 6I of the main burner constitutes an apertured flame bafile forthe pilot burner.

g5 In the various forms of the device the liquid fuel may be supplied ina variety of ways. In Figures 1 and 2, I illustrate the fuel asdelivered through an upper part of the burner, and, preferably, into apilot area partially dened by the member 35. In the remaining forms ofthe device I illustrate the liquid fuel as delivered adjacent thevaporizing plate which forms the effective bottom of the burner. In allforms, however, the liquid fuel may flow along or spread out on thevaporizing plate and is subjected to and mixed with the primary andsecondary air which ows through the primary and secondary air inletapertures.

In the form of Figure 7, I illustrate separate liquid fuel supply meansfor the pilot burner 66 and the main burner 60. I obtain the same resultin the form of Figure 5 by employing two ducts extending to a singleburner member which is divided by the intermediate element 35h intoprimary and secondary chambers.

In all the forms of the device herein shown liquid fuel is ldelivered atsuch a point on the vaporizing plate that it flows forwardly toward theflame discharge aperture of the burner. Thus the fuel, in the course ofits vaporization, ows from the coolest to the hottest part of theburner. This is an important factor in connection with adequatevaporization, avoidance of carbon deposit, and eiciency of combustion.

I claim:

1. A liquid fuel burner including a generally horizontal vaporizingplate, means for discharging liquid fuel for vaporization upon the uppersurface of and adjacent one end thereof, a housing extending upwardlyfrom both sides of the plate, closed at the top and at the end adjacentthe liquid discharge, a ange projecting upwardly from the plate at theopposite end, an apertured closure for the housing which, with the ange,defines a name opening the cross-sectional area of which issubstantially less than the cross-sectional area of the housing, therebeing a plurality of widely spaced primary air inlet apertures in thehousing wall, distributed throughout the area between the closed end andthe ame opening and a series of closely spaced secondary air inletapertures in the wall of the housing immediately adjacent the llameopening.

2. A liquid fuel burner'including a generally horizontal vaporizingplate, means for discharging liquid fuel for vaporization upon the uppersurface of and adjacent one end thereof, a semicylindrical housingextending upwardly from both sides of the plate and closed at the endadjacent the liquid discharge, aange projecting upwardly from the plateat the opposite end, an apertured half ring closure for the housingwhich, with the flange, defines a llame opening the cross-sectional areaof which is substantially less than the crosssectional area of thehousing, there being a plurality of widely spaced primary air inletapertures in the housing wall, distributed throughout the area betweenthe closed end and the flame opening and a series of closely spacedsecondary air inlet apertures in the wall of the housing immediatelyadjacent the llame opening.

3. A liquid fuel burner including a generally horizontal vaporizingplate, means for discharglng liquid fuel for vaporization upon the uppersurface of and adjacent one end thereof, a housing extending upwardlyfrom both sides of the plate, closed at the top and at the end adjacentthe liquid discharge, a ange projecting upwardly from the plate at theopposite end, an apertured closure for the housing which, with theflange, defines a flame opening the cross-sectional area oi which issubstantially less than the crosssectional area of the housing, therebeing a plurality of widely spaced primary air inlet apertures in thehousing wall, distributed throughout the area between the closed end`and the flame opening and a series of closely spaced secondary airinlet apertures in the wall of the housing immediately adjacent the`flame opening, the cross-sectional area of the housing beingsubstantially constant throughout its entire. length,

the flange and the apertured closure being perv pendicular to thevaporizing plate.

4. A liquid fuel burner including-a generally horizontal vaporizingplate, means for discharging liquid fuel for vaporization upon the uppersurface of and adjacent one end thereof, a housing extending upwardlyfrom both sides of the plate, closed at the top and at the end adjacentthe liquid discharge, a ilange projecting upwardly from the plate at theopposite end, an apertured closure for the housing which, with theflange,

defines a name opening the cross-sectional area of which issubstantially less than the cross-sectional area of the housing, therebeing a plurality of widely spaced primary air inlet aperturesREFERENCES CITED The following references are of record in the ille ofthis patent:

UNITED STATES PATENTS Number Name Date 499,220 Frayer June 13, 1893673,977 Clark May 14, 1901 884,939 Madden Apr. 14, 1908 940,713 NewmanNov. 23, 1909 1,027,699 Dawson May 28, 1912 1,427,449 DuPont Aug. 29,1922 1,611,905 Grunwald Dec. 28, 1926 1,624,943 Gibbs Apr. 19, 19271,782,049 Powers Nov. 18,- 1930 1,810,035 Valjean June 16, 19312,083,832 Daniels June 15, 1937 2,109,946 Little Mar. 1, 1938 2,187,261Breese Jan. 16, 1940 2,244,178 Senior et al June 3, 1941 2,348,721Breese et al May 16, 1944 2,353,880 Cooper July 18, 1944 2,338,254Daniels Nov. 6, 1945 2,392,757 Miller Jan. 8, 1946 2,393,176 Livar et alJan. 15, 1946 2,409,677 Grotenhouse Oct. 22, 1946 FOREIGN PATENTS NumberCountry Date 10,112 France May 1,1909 392,371 France Nov. 25, 1908

